After about 2 years of living in my new build I noticed the carpet was starting to bubble pretty badly. I bought a knee-kick stretcher and spent several days getting rid of the bubbles. It was back breaking work and took forever for someone that doesn't really know what they're doing and I could see the seams where I cut out a couple inches in the doorway and rejoined. My work lasted another couple years but the carpet started to bubble again so I called Tim. It took him a few hours to do the upper floor, basement and stairs. The carpet looks new again and the seems where he cut out pieces are invisible. Given the amount of time it took me versus what it cost for Tim to do it, I would choose Tim every time.